<xs:element minOccurs="0" name="freightType" >
  <xs:annotation>
    <xs:documentation>Type of Freight- can be Container, Break Bulk</xs:documentation>
  </xs:annotation>
  <xs:simpleType>
    <xs:restriction base="xs:string">
      <xs:enumeration value="Container"/>
      <xs:enumeration value="Break Bulk"/>
    </xs:restriction>
  </xs:simpleType>
</xs:element>